Gas analyzer



Nov. 22, 1932. w, KEMP 1,888,229

GAS ANALYZER Filed DeG. 4. 1951 n Att'y.

Patented Nov. 22,- 1932 UNITED STATES OFFICE y WILLIAM KEMP, or sfr. Louis, Missoula GAS ANALYZ Application mea December 4, 188.1..` serial ne. 578,918."

M invention relates to a gas analyzer and partlcularly to improvements in the form of analyzer shown and described in Patent No.

.Y 1,727,544 granted to me September 10, 1929.

resultant reduction in eiciency of the ana-Y lyzer. V Y In the accompanying drawing, which illus,- trates one form of gas analyzing apparatus made in accordance with my invent-ion, Figure 1 is a vertical longitudinal section; Figure 2 is a top plan view of the absorption chamber; and Figure 3V is a detail view of the diffusion plate and its elastic peripheral binding, a portion of the latter being broken away.

The general construction of the apparatus is like that shown and described in my prior patent above referred to, comprising an absorption chamber, a diffusion plate, means for supplying to the diffusion plate a uniform ilow of the flue gas or other gaseous Y mixture to be analyzed, and an indicating or recording device communicating with the absorption chamber and actuated by the .varia-l tions of gas pressure therein.

the form of a rectangular steel tank 5 and contains the absorption material 6, usually V4.o a solution of caustic potash (KOH) in water.`

A Formed in the top of thetank is a-circular opening 7 surrounded by a boss 8 either formed integral with or secured to the tank. The upper edge of the boss forms an annular Y seat for the diffusion plate 9. This plateis circular in form and of a diameter substantially equal to the outer diameter of the boss.

Enclosing the Aperipheryv of the diffusion plate is a resilient binding consisting of a vertical web 10 anda pair of annular flanges 11 extending' `inwardly l therefrom., This' binding may befmade of rubber or similar .Y resillent impervious material The lower flange rests upon theboss and the V upper flangev contacts with van annulark seat'f12 on 55 theunder side of a cover plate 1 3. Eyebolts 14 areiattachedto,the` boss bypins 15 and extendthrough lugs 16 on the'co'verx Thumb nuts 17 onfthe threaded endsothe-bolts serveto hold the cover tirmlyinjcontact with the binding and ythusi'nsurea gas-tight seal between boththe tank k'and the diffusion plate and the latter'and the diffusion chamber 4 4 formed between the plate and the cover.

In analyzers of this type the caustic potash orother gas absorbent material tends to creep along the walls-*of the tank to the diffusion lplate. and then spread' inwardly over the lower face of theplate,freducing its effective area. To overcome this objectionable fea? 7 ture,-I formin the mnerlwall of the boss ain 4annular groove,preferably slightly inclined downwardlfy, Yas shown,-and1placejin this groove a Vlling 18 of moisture repellent material, such :as fp'arafiin wax. The l12e-7.7.5 pellent ring intercepts the absorbentvcaustic `potash and'sorprotects the diffusion'ufplate from. contamination thereby. Y

' The Vgas to-loe` analyzed is.' supplied to the; Y diffusion chamberithrough a supply pipe 19 and escapes through an outlet openingQO at the opposite side of the chamber.l "The-absorption chambercommunicates through al -Y pipe 21 withan instrument 22 which indicates orv recordsfthe variations of pressure'in'the 85 The absorption Chamber is ,preferably in, absorption chamber dueto the'percentage of absorbable gas in the mixture supplied to the diffusion chamber.v e It will be seen thatwhile my analyzer is simple in construction,.anfefective seal is v provided for` the diffusionV plate and said-` plate may be readily removed and replacedV for the purposey of cleaningits upper .surface e. which may receive deposits of ycarbon from v the flue gasesprassing over it. 'Further, the lower face of the ,plate is eiectively protected from'contamination by the, caustic potash of theabsorption liquid. i 4 y Havingfully described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a device of the class described, an absorption chamber provided with a seat, a diffusion plate, an impervious binding surrounding the periphery of said plate and having inwardly extending anges overlappingv both faces thereof, one of said flanges bearing on said seat, a cover contacting with the other of said flanges, and clamping means for se-A curing the -cover in position. Y

2. In a device of the class described, an absorption chamber provided with a seat, a di'usion plate, a binding for said plate formed of resilient impervious material comprising a web enclosing the periphery of the plate and a pair of integral flanges overlapping the faces thereof, one of said flanges bearing on said sea-t, a cover contacting with the other of saidlianges, and clamping means for securing the cover in position.

B. Inea device of the class described, an absorption chamber having an opening in the top thereof, a'boss surrounding said opening, the edge of said boss forming a seat face, an absorption disk, a binding for said disk formed of'resilient impervious material comn prising a web enclosing the periphery of the disk and a pair of integral flanges overlapping the faces thereof, one of said flanges bearing on said seat, a cover contacting with the other of said flanges, bolts carried by said boss, and nuts on said bolts and engaging the cover to secure ,the same in position.

- 4l. In a deviceof vthe class described, the combination with a tank containing an absorption liquid, of a diffusion plate Y supported; from said tank, and a moisture repellent barrier interposed between the liquid and the plate to prevent access of the former to the latter by creepage along the wallsof the'tank. Y

5. In a device of the class described, the combination with a tank containing an absorption liquid, an opening in the .top of said tank surrounded by a boss, a groove'formed in the vinner wall of said boss, a filling of moisture repellent material in said groove, a diffusion plate supported on said boss, and means for clamping said plate in position. In testimony whereof, I hereunto aiix my signature, this 1st day of December, 1931.

WILLIAM KEMP. 

